Funny how questions like this were completely ignored in the previous conversation where people were shitting on the homeless, but suddenly are important now that the homeless aren't the target anymore.
Here's how the cycle works. We decide a certain group of people ("literally the dregs [sic] of society") causes most of our problems. Then we pass laws targeting that group, and enforce the laws most strictly against against that group — and surprise, that group ends up getting caught breaking the law most often! Then we use that to drum up further public sentiment against that group. Rinse, repeat.
Crime is a social construct. We choose what's illegal and what's not. We enforce some of the laws, against some of the people, some of the time. Saying that a certain group commits the vast majority of crimes is meaningless without additional context. And if your additional context is that they're "literally the dregs of society", you're not being serious — you just have an axe to grind.